the three finalists all perfect formed last night and all of them asked for america's vote. >> former contestants also took to the stage to pay tribute to the victims of the connecticut school tragedy. nbc's stephanie stanton is live in l.a. right now with a preview of tonight's big two-hour season finale. stephanie? >> reporter: yes, indeed. yesterday the show started on an emotional somber note with that tribute to the connecticut shooting victims. well, tonight, in just a few hours, we will learn the winner of "voice." it all comes down to these three finalists. the rocker, the soul man, and the pop country queen. so will we see a woman win this thing for the very first time? it is all up to america. ♪ it won't be long >> reporter: for the finalists last night's show was unlike any other before. >> i admit, it was a different vibe. >> reporter: the finale began with coaches and singers uniting for a tribute to the victims of the connecticut school shooting. >> the mood was very somber and had to get the game face on. >> reporter: nick', that meant delivering positive energy. >> a